又見GCD
Time Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 18109 Accepted Submission(s): 7542
8
#include<stdio.h>
#include<algorithm>
#include<iostream>
using namespace std;
int gcd(int a,int b)
{
if(a==0)
{
return b;
}
else
{
return gcd(b % a,a);
}
}
int main()
{
int n;
scanf("%d",&n);
while(n--)
{
int a,b,c,i;
scanf("%d%d",&a,&b);
for( i=b+b;i<=a*b;i+=b)
{
if(gcd(a,i)==b)
{
break;
}
}
printf("%d\n",i);
}
return 0;
}